All told, there is more than 23 square miles of land that isn't being used.

There are at least six companies already interested in the project, and Ukraine hopes to install 4 megawatts of panels by the end of the year.

The European Bank for Reconstruction and Development is also considering investing. That bank has already put about $500 million into constructing a massive, stainless steel shield for the damaged nuclear reactor.

The project could help Ukraine become less dependent on Russia for its energy needs. The country heavily relies on natural gas from Russia, but it's recently been trying to find alternatives to that deal.

Tensions are high between the neighboring countries. Russian-backed rebels invaded an eastern Ukrainian territory in 2014. The two sides are currently in an uneasy cease-fire.